It is interesting to see that you are effectively thinking about changing the vacuum in the airbox (by adjusting the size of the airbox inlet area) to alter the mixture.
I have to admit that I have never really thought of having a "winter" airbox inlet area and a "summer" airbox inlet area.

Also, in case you don't know already:
The forum rules indicate that you are not supposed to talk about jetting specifics in the free forums.
You have to go to the "paid up" forums to talk about jetting specifics.

So if you do not get very specific answers here, well, now you know why.
_________________
[color=#808080][size=9]Yes,.. I too know how to waste Time and Money,...